Chef knife



FIG. 1 is a perspective view of a chef knife showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The portions of the chef knife shown in broken lines form no part of theclaimed design.

CLAIM The ornamental design for a chef knife, as shown and described.